Irrigation Potential in Africa

Irrigation Potential in Africa
Author: Karen Frenken
Publisher: Food & Agriculture Org.
Total Pages: 196
Release: 1997
Genre: Irrigation
ISBN: 9789251039663

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Estimating Runoff and Sediment Yield Using Kw-Giuh and Musle Models

Estimating Runoff and Sediment Yield Using Kw-Giuh and Musle Models
Author: Saleh Arekhi
Publisher: LAP Lambert Academic Publishing
Total Pages: 100
Release: 2010-10
Genre:
ISBN: 9783838394411

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In the present study, efforts were made to develop one Kinematic Wave and Geomorphic Instantaneous Unit hydrograph theory based and MUSLE model based rainfall-runoff and sediment yield estimating model for un-gauged/in-adequately gauged micro watersheds. The developed model was tested for its application potential on 3-ecologically diverse micro watersheds in Almora district of Uttaranchal. Proposed model simulated total runoff volumes for three micro watersheds were found to be associated with mean relative errors ranging between 16% to 38%. The developed KW-GIUH-MUSLE model was also tested for its potential to give realistic sediment yield estimates for 11 storms/events in a test micro- watershed. It was observed that these sediment yield estimates were associated with about 6% mean relative error and 0.94 mean DV value. The above analysis could thus clearly show that the developed KW-GIUH-MUSLE model can indeed be utilized for obtaining reasonable surface runoff and sediment yield estimates.

Modeling Runoff and Sediment Yield from a Terraced Watershed Using WEPP

Modeling Runoff and Sediment Yield from a Terraced Watershed Using WEPP
Author: Mary Carla McCullough
Publisher:
Total Pages: 12
Release: 2008
Genre:
ISBN:

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The watershed version of WEPP (Water Erosion Prediction Project) was used to estimate 50-year runoff and sediment yields for a 291 ha watershed in eastern Nebraska that is 90% terraced and which has no historical gage data. The watershed has a complex matrix of elements, including terraced and non-terraced subwatersheds, multiple combinations of soils and land management, a grassed-waterway network, and natural stream channels leading to the outlet. The objectives of this study were to model the study watershed using WEPP and to evaluate model results compared to literature values. WEPP estimated the sediment yield to be 1.9 T/ha/yr, the sediment delivery ratio to be 0.22 and the percent of sediment contribution from the main channel to be 31% of the total sediment yield. These results are consistent with values reported in the literature.

River System Analysis and Management

River System Analysis and Management
Author: Nayan Sharma
Publisher: Springer
Total Pages: 413
Release: 2016-11-13
Genre: Technology & Engineering
ISBN: 9811014728

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The main thrust of this book is focused on addressing the various interrelated processes, analysis and activities bearing upon sound river management. River basins are complex systems. They are open systems with sometimes ill-defined boundaries. It refers to various aspects essential to achieve a sustainable development of river basins, including water demand and river management. Intensified erosion, land water degradation and stream flow pollution which call for appropriate river restoration and training measures. A viable theory for river management must reconcile the various processes that occur at different scales in order to develop a knowledge base by synthesizing research and field studies results. The book is intended to augment the knowledge base of behaviour of rivers and analyse the issues related to rivers so as to develop river system management techniques emerging from in-depth scientific analysis as a priority. This book pools together the expertise, the in-depth knowledge and the experience of the people representing different disciplines bearing on the related aspects of analysis and management of river systems. Audience The book is expected to be useful to academics, practitioners, scientists, water managers, environmentalists, administrators, researchers and students who are involved and have stakes in water management and river system analysis.

NBS Special Publication

NBS Special Publication
Author:
Publisher:
Total Pages: 964
Release: 1980
Genre: Weights and measures
ISBN:

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A Generalized Simulation Model for Reservoir System Analysis

A Generalized Simulation Model for Reservoir System Analysis
Author: Richard J. Hayes
Publisher:
Total Pages: 14
Release: 1992
Genre: Flood control
ISBN:

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This paper overviews the general features of computer program 'HEC-5, Simulation of Flood Control and Conservation Systems', with emphasis on the capabilities of the most recent release of HEC-5, Version 7.2, dated March 1991. HEC-5 can simulate the essential features and operation goals and constraints of simple or complex systems with simulation intervals ranging from minutes to one month. Single event flood analysis and period of record conservation analysis may be accomplished with the model. Flood control analysis includes balanced system operation for downstream damage centers with consideration of forecasted local flows and hydrologic routing. In addition, induced surcharge operation based on spillway gate regulation schedules can be simulated. Hydropower analysis may include run-of-river, peaking, and pumped storage plants as well as system power operation. Water supply simulation can include reservoir and downstream flow requirements in addition to divers ions and return flows. Water Quality analysis can include simulation of temperature, dissolved oxygen, up to three conservative and up to three nonconservative constituents. Computer Programs, Simulation, Reservoirs, Flood Control, Reservoir Yield, Hydroelectric Power, Water Supply, Water Quality.